KWS-670 Portable Optical Dissolved Oxygen Meter
Overview
KWS-670 Portable Optical Dissolved Oxygen Meter adopts the advanced fluorescence quenching principle to measure the dissolved oxygen concentration in water bodies without any loss. It has the advantages of being pollution-free, having a long service life, good stability, and low maintenance difficulty.
This product is convenient for users to carry around, enabling them to monitor dissolved oxygen (with barometric pressure and salinity compensation) and temperature on-site. It can also calibrate the dissolved oxygen measurement probe.
The display uses a liquid crystal display, which provides clear readings and is easy to use. It is powered by a built-in lithium battery, eliminating the need to replace the battery, and it can conduct continuous measurements on-site.
Functions of the Buttons
There are 5 buttons and 2 indicator lights on the control panel of this product (as shown in Figure 1). Their respective functions are as follows:
1.Power Switch:
① When the device is off, press and hold the button for 2 seconds. Release the button when the LCD screen lights up, indicating successful startup.
② When the device is on, press and hold the button for 2 seconds. Release the button when the LCD screen turns off, indicating successful shutdown.
2.Menu Button:
① Press and hold the button for 2 seconds to enter the main menu.
② Press the button briefly to cancel the settings and return to the previous – level menu.
3.Confirm Button: Confirm the settings or enter the next – level menu.
4.Increase Button (▲): Move up or increase the value in the menu interface.
5.Decrease Button (▼): Move down or decrease the value in the menu interface.
6.Red LED Indicator: When the red light is on, it indicates that the device is being charged.
7.Green LED Indicator: When the green light is on, it indicates that the charging is completed.
| Dissolved Oxygen Sensor | |
|---|---|
| DO Range | 0～20 mg/L |
| Accuracy | < ±0.5 mg/L |
| Measurement Repeatability | < 0.3mg/L |
| Zero Offset | < 0.5 mg/L |
| Resolution | 0.01mg/L |
| Temperature Measurement Range | 0～60℃ |
| Temperature Resolution | 0.1℃ |
| Temperature Measurement Error | < 0.5℃ |
| Power Supply | 3.7VDC |
| Operating Temperature | 0～40℃ |
| Storage Temperature | -20～70℃ |
| Dimensions | φ30 *165 mm |
| Anti - interference | It is not interfered by the following substances: H₂S, pH, K⁺, Na⁺, Mg²⁺, Ca²⁺, NH₄⁺, Al³⁺, Pb²⁺, Cd²⁺, Zn²⁺, total Cr, Fe²⁺, Fe³⁺, Mn²⁺, Cu²⁺, Ni²⁺, Co²⁺, CN⁻, NO₃⁻, SO₄²⁻, S²⁻, PO₄³⁻, Cl⁻, anionic surfactants, crude oil, Cl₂⁻. |
| LCD Display | |
| Display Screen | Graphic dot - matrix LCD, 128×64 with LED backlight |
| Controller Size | 80×160×30 mm |
| Power Supply | Built - in 3.7V rechargeable lithium battery |
